1. EU Guidelines for good manufacturing practice for medicinal products for human and veterinary use. EudraLex, Volume 4, Annex 15: Qualification and Validation, 2015, Brussels. https://ec.europa.eu/health/documents/eudralex/vol4_en
2. Guide to inspections validation of cleaning processes. U.S. Food and Drug Administration, Office of Regulatory Affairs, 2014, Washington. https://www.fda.gov/validation-cleaning-processes793
3. Vincamine residues analysis using HPLC and establishing limits of crosscontamination in support of cleaning validation;Rubashvili, I.;Revue Roumaine de Chimie,2018
4. U.S. Pharmacopeia National Formulary USP39 NF34: Volume 2. Lisinopril. The United States Pharmacopeial Convention. United Book Press: Baltimore, 2016, pp. 4580-4579. https://www.uspnf.com/official-text/proposalstatuscommentary/usp-39-nf-34
5. U.S. Pharmacopeia National Formulary USP39 NF34: Volume 2. Hydrochlorothiazide. The United States Pharmacopeial Convention. United Book Press: Baltimore, 2016. pp. 4209-4210. https://www.uspnf.com/official-text/proposalstatuscommentary/usp-39-nf-34